CN101868033A - Method and device for controlling downlink subframe and transmitting data of trunk link - Google Patents
Method and device for controlling downlink subframe and transmitting data of trunk link Download PDFInfo
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Abstract
The invention discloses a method for controlling downlink subframe and transmitting data of a trunk link. The method comprises the following steps that: a base station transmits a relay physical control format indicating channel (R-PCFICH) to a trunk node, wherein the R-PCFICH indicates the number N of orthogonal frequency division multiplexing (OFDM) symbols and the number M of resource blocks occupied by a relay physical downlink control channel (R-PDCCH); the base station transmits control information to the trunk node on the relay physical downlink control channel (R-PDCCH); and the base station transmits data to the trunk node on a relay physical downlink shared channel (R-PDSCH). The invention also discloses base station equipment and the trunk node for implementing the method. The method and the device provide a particular scheme for data on the trunk link and signaling multiplexing control, and the scheme meets the design requirement of an LTE-A system, and can be compatible with the conventional 3GPP Rel-8 system.
Description
Technical field
The present invention relates to the 3G (Third Generation) Moblie technical field, particularly a kind of control of repeated link descending sub frame and data multiplexing method and device.
Background technology
(LTE is the abbreviation of Long Term Evolution at 3GPP Long Term Evolution LTE-Advanced, it is the evolution system of 3-G (Generation Three mobile communication system), the LTE-Advanced system is the upgrading of LTE system, being abbreviated as LTE-A) in the system, the service quality and the Extended Cell that will adopt the method for relaying (Relay) cooperation transmission to improve Cell Edge User cover.In relay system, the subscriber equipment (UE) of directly being served by base station (eNB) is called grand UE (Macro UE), and (Relay Node, RN) directly the UE of service is called relaying UE (Relay UE) by via node.From present research and discussion progress, design object is the relaying of (In-band) in half-duplex and the band.So-called half-duplex, i.e. the via node operation that on same frequency, can not receive simultaneously and send.In the so-called band, promptly eNB uses identical frequency resource with transfer of data and the transfer of data between eNB and Macro UE and Relay and the Relay UE between the via node.
In relay system, frame structure can be divided into following 4 zones:
1, descending access is regional: eNB and RN send downstream signal respectively to Macro UE and RelayUE;
2, down mixing zone: eNB sends downstream signal to RN and Macro UE;
3, up access is regional: Macro UE and Relay UE send upward signal respectively to eNB and RN;
4, up Mixed Zone: Macro UE and RN send upward signal to eNB.
In order to make the Relay network can compatible Rel-8UE, promptly keep Relay UE identical frame structure to be arranged with Macro UE, just do not send or receive some subframe, adopt Multicast Broadcast Single Frequency Network (Multicast Broadcast Single Frequency Network, MBSFN) mode of subframe realizes the signal transmission of repeated link, just carries out the signal transmission by repeated link with same frequency in many sub-districts simultaneously.This scheme is as follows:
In up Mixed Zone, promptly RN is when eNB sends upward signal, and Relay UE mourns in silence and promptly do not transmit any upward signal;
In the down mixing zone, be that eNB is when RN sends downstream signal, the frame structure of Relay is configured to the MBSFN subframe, the descending control signaling zone that promptly has 1 or 2 OFDM symbol is used for RN and sends descending control signaling (RN can not receive and come from signal of base station this moment) to the relaying UE of its service.After this, RN receives the repeated link signal of sending the base station (at this moment RN does not send signal to the UE of its service).
Fig. 1 has provided the relay transmission scheme based on time division duplex (TDD) frame structure.Tdd frame comprises two fields, and each field comprises 5 subframes again, and each subframe has corresponding subframe sequence number, is respectively subframe 0, subframe 1, subframe 2...... subframe 9.Each subframe comprises several OFDMs (Orthogonal Frequency Division Multiplexing, OFDM) symbol (symbol).Wherein subframe 1 is a special subframe, comprises descending pilot frequency sequence time slot (DwPTS), protection time slot (GP) and uplink pilot sequence time slot (UpPTS).Mark off descending access zone, up Mixed Zone, up access zone and down mixing zone in the tdd frame again.Symbol among Fig. 1 " TX " expression sends, and " RX " represents to receive.In the down mixing zone, it is that transmit the multiplexing data area of together passing through the MBSFN subframe that base station transmits is given the repeated link data of RN and control signaling, i.e. shadow region shown in the figure.
In present LTE-A system design, only formed the framework of the resource division of each bar link as shown in Figure 1, but, also do not had ripe solution the multiplexing method of the data on the repeated link with the control signaling.
Summary of the invention
In view of this, the objective of the invention is to, propose a kind of control and data transmission method and equipment of repeated link descending sub frame, can in the LTE-A system, realize relay transmission.
The control of a kind of described repeated link descending sub frame that the embodiment of the invention proposes and the transmission method of data comprise the steps:
The base station sends relaying Physical Control Format Indicator Channel R-PCFICH to via node, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
The base station sends control information to via node on relaying Physical Downlink Control Channel R-PDCCH;
The base station sends data to via node on relaying Physical Downlink Shared Channel R-PDSCH.
The control of the another kind of repeated link descending sub frame that the embodiment of the invention proposes and the transmission method of data comprise the steps:
Via node receives the relaying Physical Control Format Indicator Channel R-PCFICH that the base station sends, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Via node receives the control information that the base station sends on relaying Physical Downlink Control Channel R-PDCCH;
Via node receives the data that the base station sends on relaying Physical Downlink Shared Channel R-PDSCH.
A kind of base station equipment that the embodiment of the invention proposes comprises:
First transport module is used for sending relaying Physical Control Format Indicator Channel R-PCFICH to via node, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second transport module is used for sending control information to via node on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd transport module is used for sending data to via node on relaying Physical Downlink Shared Channel R-PDSCH.
A kind of via node equipment that the embodiment of the invention proposes comprises:
A kind of via node equipment comprises:
First receiver module is used to receive the relaying Physical Control Format Indicator Channel R-PCFICH that the base station sends, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second receiver module is used to receive the control information that the base station sends on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd receiver module is used to receive the data that the base station sends on relaying Physical Downlink Shared Channel R-PDSCH.
As can be seen from the above technical solutions, the present invention has provided the concrete scheme to data on the repeated link and control signal multiplex, and this scheme meets the LTE-A requirement of system design, and system that can compatible existing 3GPP Rel-8.
Description of drawings
Fig. 1 is the relay transmission scheme schematic diagram based on time division duplex (TDD) frame structure of the prior art;
Fig. 2 is the data and the distribution schematic diagram of signaling on time domain and frequency domain of embodiment of the invention down link backhaul subframe.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing.
Base station configuration down link backhaul (Downlink Backhaul) subframe.Down link backhaul subframe refers to the subframe of eNB to RN transmission downlink data, in fact is exactly the zone of dash area shown in Figure 1, just the down mixing zone of repeated link.RN can become this sub-frame configuration the MBSFN subframe.On the OFDM symbol of the initial some of MBSFN subframe, (Physical Downlink Control Channel PDCCH) sends signal to Relay UE to RN by Physical Downlink Control Channel.The base station also sends signal for grand UE by PDCCH on described these several OFDM symbols.Therefore, on described these several OFDM symbols, semiduplex RN can not receive the signal that eNB sends by the PDCCH channel.On the OFDM symbol of the initial predetermined number of each subframe, eNB can send Physical Control Format Indicator Channel (Physical Control Format Indication Channel, PCFICH), PDCCH, the automatic request retransmission indicating channel of physical mixed (Physical HARQIndication Channel, PHICH).These signals can be the system compatibles with 3GPP Rel-8.Other OFDM symbol after the OFDM of described predetermined number symbol can be used for transmitting physical DSCH Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) signal.
More detailed information can be consulted " 3GPP TS 36.211,3rd Generation PartnershipProject; Technical Specification Group Radio Access Network; EvolvedUniversal Terrestrial Radio Access (E-UTRA); Physical Channels andModulation (Release 8) " and " 3GPP TS 36.814,3rd Generation PartnershipProject; Technical Specification Group Radio Access Network; FurtherAdvancements for E-UTRA Physical Layer Aspects (Release 9).”
In the present invention, the channel that eNB sends control signaling to RN is called relaying Physical Downlink Control Channel (R-PDCCH), and this control signaling bear is on the OFDM of PDSCH symbol.For example, the 1st of a subframe the to d OFDM symbol is PDCCH; D+1 to D OFDM symbol is PDSCH; D is the number of OFDM symbol in the subframe.In 3GPP LTE, for a MBSFN subframe, d can be 1 or 2; In normal cyclic prefix (cyclic prefix) subframe, D can be 14.On the 1st to d OFDM symbol, base station and via node all will send PDCCH.Therefore, semiduplex via node can not receive the signal that the base station sends on preceding d OFDM symbol.In the present invention, the base station sends for the control signal and the data of via node behind d OFDM symbol, as shown in Figure 2.In a kind of case, via node sends PDCCH and receives has certain hour at interval between the R-PDCCH/R-PDSCH, be used for via node from sending to the switching time of reception.On another kind of case, via node begins to receive the R-PDCCH/R-PDSCH that the base station sends on d+2 OFDM symbol.Preferably, R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.R-PDCCH and R-PDSCH are multiplexing on same subframe by time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
The OFDM symbolic number that R-PDCCH takies is made as N, and (Resource Block, RB) number is made as M to the Resource Block that takies.(Resource Elements REs) forms each RB by a plurality of resource elements.R-PDCCH can comprise that eNB gives the control channel of a plurality of via nodes, and described control channel includes, but are not limited to descending scheduling signaling (DL grant).The control channel of each via node all has the identity (ID) of this via node.Each via node can be on R-PDCCH obtains separately control information by blind check (blinddecoding).
Some RE in the R-PDCCH zone upload relaying Physical Control Format Indicator Channel (R-PCFICH) signaling.The R-PCFICH signaling is used to indicate the value of N and M.According to the value combination of different N and M, R-PCFICH can carry the information of a plurality of bits (bit).
Such as, N={1,2,3,4}OFDM symbol, M={3,6,9,12}RB.N * M=16 like this.So R-PCFICH should carry the information of 4bit.If R-PCFICH is made up of 12 resource elements, can carry 2 bit (using the QPSK modulation system) on each resource element, so always have 24 coded information bits (coded information bits).The information of 4 bits of R-PCFICH can for example be 1/6 block encoding (block codes) with encoding rate by certain chnnel coding to 24 coded information bits.The above act only is example, not in order to get rid of other channel coding method.The number of the RE of aforesaid N, M and R-PCFICH only is an illustration, not in order to get rid of other value.
ENB is called relaying Physical Downlink Shared Channel (R-PDSCH) to the data channel that via node sends data.On a kind of case, the R-PDSCH channel can be arranged on M the RB of R-PCFICH indication.The R-PDCCH that is configured to has like this distributed identical RB with R-PDSCH.The transmission data of a plurality of RN can be given in the base station at R-PDSCH.R-PDCCH and R-PDSCH can adopt time-multiplexed mode, as described in Figure 2.
Each RN goes to receive one's own data according to the own control signaling of receiving on R-PDCCH.Preferably, each RN can be according to certain agreement, by blind decoding (blind decoding) mode, in the one's own control signaling of R-PDCCH regionally detecting.The transmission means of R-PDSCH can select for use following any one:
(1), R-PDSCH can only go up transmission at M the RB (on the later several OFDM symbols of R-PDCCH) that the control signaling of R-PDCCH is indicated, it is characterized by the base station and can not send data to via node on the RB beyond the described M RB, grand UE transmission data can be given in the base station on a described M RB;
(2), the M of a R-PDCCH RB (on the later several OFDM symbols of R-PDCCH) can only be used for transmitting R-PDSCH, it is characterized by the base station and can not give grand UE transmission data on a described M RB, the base station can send data to via node on the RB beyond the described M RB;
(3), R-PDSCH can only can only be used for transmitting R-PDSCH at M the RB (on the later several OFDM symbols of R-PDCCH) that M the RB of R-PDCCH (on the several OFDM symbols after R-PDCCH) goes up transmission and R-PDCCH, it is characterized by the base station can not can not transmit data to grand UE to via node transmission data and base station on a described M RB on the RB beyond the described M RB.
(4), R-PDSCH can transmit on the RB beyond M the RB of R-PDCCH, and grand UE transmission data can be given in the base station on a described M RB.
Aforesaid R-PCFICH only can indicate the value of N and M.Can not indicate the position of the RB of R-PDCCH.A kind of preferred implementation, the position of the RB of R-PDCCH can be semi-staticly by top signaling notice via node.For example, the base station is by the point midway on frequency domain of high-level signaling notice via node R-PDCCH.Another kind of execution mode, fixing position can be got in the position of the RB of R-PDCCH in system.The size (be the value of M) of R-PDCCH on frequency domain indicated by R-PCFICH.
Fig. 2 shows the data and the distribution schematic diagram of signaling on time domain and frequency domain of embodiment of the invention down link backhaul subframe.As shown in Figure 2, R-PDCCH is right after in time in the PDCCH back.Because via node will send control signaling to Relay UE on the OFDM of PDCCH symbol, will receive the signal that eNB sends to RN on R-PDCCH.So via node need predetermined length by the switching time that sends to reception, this switching time that sends to reception is between PDCCH and R-PDCCH.Similarly, via node will send signal in next subframe to Relay UE harvesting after eNB gives his R-PDSCH, via node need predetermined length by the switching time that receives transmission, be positioned at after the R-PDSCH this switching time that receives transmission.Do not embody on Fig. 2 the above switching time.
As shown in Figure 2, described M RB of R-PDCCH/R-PDSCH correspondence is continuous on frequency domain.But it is discontinuous situation on frequency domain that the present invention program does not get rid of the RB of R-PDCCH and R-PDSCH correspondence yet.If the RB of R-PDCCH/R-PDSCH correspondence is discontinuous on frequency domain, can distribute according to certain agreement.Such as, the M of a R-PDCCH/R-PDSCH RB can be evenly distributed among S the continuous RB, S＞M.
R-PCFICH can fix the position in a described M RB.The used RE of R-PCFICH can adopt following any one situation:
(1), the used RE of R-PCFICH is evenly distributed on m the RB among the described M RB 1≤m≤M.
(2), the used RE of R-PCFICH on middle L of a described M RB continuous RE, L＜M.
(3) the shared RE of R-PCFICH is a L resource element among the described M RB, L＜M wherein, and L resource element can continuously also can be discontinuous.
Perhaps, R-PCFICH can be distributed in beyond the described M RB, and for example R-PCFICH can be evenly distributed on the system bandwidth.
The used OFDM symbol of R-PCFICH can adopt following any one situation:
(1), on R-PCFICH first OFDM symbol in described N OFDM symbol, or on the OFDM symbol of making an appointment.
(2), R-PCFICH is distributed in described N the OFDM symbol on the plural OFDM symbol.
Integrate, RE that R-PCFICH is used and used OFDM symbol can be in above situation independent assortment.
An embodiment is, on R-PCFICH first OFDM symbol in described N OFDM symbol, the shared resource element of R-PCFICH is a L resource element in M the Resource Block taking of described R-PDCCH, L＜M wherein, and L resource element can continuously also can be discontinuous.
The value of N and M can be transferred to UE by high-level signaling.Do not need R-PCFICH in this case.
R-PCFICH can the cycle or aperiodic ground on some down link backhaul subframe, send.Before receiving new R-PCFICH, the N of previous R-PCFICH indication and the value of M are effective.
A kind of base station equipment that the embodiment of the invention proposes comprises:
First transport module is used for sending relaying Physical Control Format Indicator Channel R-PCFICH to via node, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second transport module is used for sending control information to via node on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd transport module is used for sending data to via node on relaying Physical Downlink Shared Channel R-PDSCH.
Preferably, the Resource Block of described R-PDSCH is identical on frequency domain with M the Resource Block of described relaying Physical Downlink Control Channel R-PDCCH.
Preferably, this base station equipment further comprises,
The 4th transport module is used for sending control information to grand terminal on physical downlink control channel PDCCH;
The 5th transport module is used for sending data to grand terminal on Physical Downlink Shared Channel PDSCH;
Described PDCCH and PDSCH are multiplexing on same subframe by time-multiplexed mode.
Preferably, PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is on D OFDM symbol of the d+1 to the of described subframe, and D is the OFDM total number of symbols on the subframe; R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.
R-PDCCH and R-PDSCH are multiplexing on same subframe by time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
The embodiment of the invention also proposes a kind of via node equipment, comprising:
First receiver module is used to receive the relaying Physical Control Format Indicator Channel R-PCFICH that the base station sends, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second receiver module is used to receive the control information that the base station sends on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd receiver module is used to receive the data that the base station sends on relaying Physical Downlink Shared Channel R-PDSCH.
Preferably, the Resource Block of described R-PDSCH is identical on frequency domain with M the Resource Block of described relaying Physical Downlink Control Channel R-PDCCH.
Time-multiplexed mode is adopted to physical downlink control channel PDCCH and the Physical Downlink Shared Channel PDSCH that grand terminal sends in the base station on a subframe; PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is at D OFDM symbol of the d+1 to the of described subframe, and D is an orthogonal frequency division multiplex OFDM total number of symbols on the subframe;
Described R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.
R-PDCCH and R-PDSCH adopt time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1. the transmission method of the control of a repeated link descending sub frame and data comprises the steps:
The base station sends relaying Physical Control Format Indicator Channel R-PCFICH to via node, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
The base station sends control information to via node on relaying Physical Downlink Control Channel R-PDCCH;
The base station sends data to via node on relaying Physical Downlink Shared Channel R-PDSCH.
2. method according to claim 1 is characterized in that:
The Resource Block of described R-PDSCH is identical on frequency domain with M the Resource Block of described relaying Physical Downlink Control Channel R-PDCCH.
3. method according to claim 1 is characterized in that this method further comprises the steps:
The base station sends control information to grand terminal on physical downlink control channel PDCCH;
The base station sends data to grand terminal on Physical Downlink Shared Channel PDSCH;
Described PDCCH and PDSCH adopt time-multiplexed mode on a subframe.
4. method according to claim 3 is characterized in that:
PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is on D OFDM symbol of the d+1 to the of described subframe, and D is the OFDM total number of symbols on the subframe; R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.
5. method according to claim 4 is characterized in that:
R-PDCCH and R-PDSCH adopt time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
6. method according to claim 5 is characterized by and is:
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
7. the transmission method of the control of a repeated link descending sub frame and data comprises the steps:
Via node receives the relaying Physical Control Format Indicator Channel R-PCFICH that the base station sends, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Via node receives the control information that the base station sends on relaying Physical Downlink Control Channel R-PDCCH;
Via node receives the data that the base station sends on relaying Physical Downlink Shared Channel R-PDSCH.
8. method according to claim 7 is characterized in that:
The Resource Block of described R-PDSCH is identical on frequency domain with the M of described R-PDCCH Resource Block.
9. method according to claim 7 is characterized in that: time-multiplexed mode is adopted to physical downlink control channel PDCCH and the Physical Downlink Shared Channel PDSCH that grand terminal sends in the base station on a subframe; PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is at D OFDM symbol of the d+1 to the of described subframe, and D is an orthogonal frequency division multiplex OFDM total number of symbols on the subframe; R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D
10. method according to claim 9 is characterized in that:
R-PDCCH and R-PDSCH adopt time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
11. method according to claim 10 is characterized in that:
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
12. a base station equipment is characterized in that, described base station equipment can realize the control of repeated link descending sub frame and the transmission of data; Described base station equipment comprises:
First transport module is used for sending relaying Physical Control Format Indicator Channel R-PCFICH to via node, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second transport module is used for sending control information to via node on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd transport module is used for sending data to via node on relaying Physical Downlink Shared Channel R-PDSCH.
13. base station equipment according to claim 12 is characterized in that, the Resource Block of described R-PDSCH is identical on frequency domain with M the Resource Block of described relaying Physical Downlink Control Channel R-PDCCH.
14. base station equipment according to claim 12 is characterized in that, this base station equipment further comprises,
The 4th transport module is used for sending control information to grand terminal on physical downlink control channel PDCCH;
The 5th transport module is used for sending data to grand terminal on Physical Downlink Shared Channel PDSCH;
Described PDCCH and PDSCH are multiplexing on same subframe by time-multiplexed mode.
15. base station equipment according to claim 14 is characterized in that, PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is on D OFDM symbol of the d+1 to the of described subframe, and D is the OFDM total number of symbols on the subframe; R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.
16. base station equipment according to claim 15 is characterized in that:
R-PDCCH and R-PDSCH are multiplexing on same subframe by time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
17. base station equipment according to claim 16 is characterized in that:
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
18. a via node equipment comprises:
First receiver module is used to receive the relaying Physical Control Format Indicator Channel R-PCFICH that the base station sends, orthogonal frequency division multiplex OFDM number of symbols N and resource block number M that R-PCFICH indication relaying Physical Downlink Control Channel R-PDCCH takies;
Second receiver module is used to receive the control information that the base station sends on relaying Physical Downlink Control Channel R-PDCCH;
The 3rd receiver module is used to receive the data that the base station sends on relaying Physical Downlink Shared Channel R-PDSCH.
19. via node according to claim 18 is characterized in that, the Resource Block of described R-PDSCH is identical on frequency domain with M the Resource Block of described relaying Physical Downlink Control Channel R-PDCCH.
20. via node according to claim 18 is characterized in that,
Time-multiplexed mode is adopted to physical downlink control channel PDCCH and the Physical Downlink Shared Channel PDSCH that grand terminal sends in the base station on a subframe; PDCCH is on the 1st to d OFDM symbol of described subframe; PDSCH is at D OFDM symbol of the d+1 to the of described subframe, and D is an orthogonal frequency division multiplex OFDM total number of symbols on the subframe;
Described R-PCFICH, R-PDCCH and R-PDSCH on S OFDM symbol of the s to the of described subframe, s 〉=d wherein, S≤D.
21. via node according to claim 20 is characterized in that:
R-PDCCH and R-PDSCH adopt time-multiplexed mode; R-PDCCH is on t OFDM symbol of the s to the of described subframe; R-PDSCH on S OFDM symbol of the t+1 to the of described subframe, s 〉=t 〉=S wherein.
22. via node according to claim 21 is characterized in that:
R-PCFICH is on s OFDM symbol of described subframe; And/or,
The shared resource element of R-PCFICH is L resource element, wherein L＜M in M the Resource Block taking of described R-PDCCH.
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